public class Example7_5 {
   public static void main(String args[]) {
     Bank bank=new Bank();
     try{ bank.income(200,-100);
          bank.income(300,-100);
          bank.income(400,-100);
          System.out.printf("银行目前有%d元\n",bank.getMoney());
          bank.income(200,100);
          bank.income(99999,-100);
     }
     catch(BankException e) {
        System.out.println("计算收益的过程出现如下问题:");
        System.out.println(e.warnMess());
     }
     System.out.printf("银行目前有%d元\n",bank.getMoney());
  }
}
 
